Booted up my X92 TV box with Armbian_20.09_Arm-64_bionic_current_5.8.7.img and meson-gxm-q201.dtb. Installed desktop through the armbian-config. However no sound present on HDMI. However when booting up desktop builds the sound is activated automatically. In the instructions provided by @balbes150 in pg 1 it is mentioned
For gxbb\GXL\GXM models (S905\S905X\S912), if there is no sound, you need to try running the script (gx_sound.sh)
sudo /root/gx_sound.sh
But there is no gx_sound.sh script in root. Please help.